. >> heaven forbid. the flu vaccine does not cause flu. >> right. >> that's an old myth, urban and rural. we have to give it up. it's just not true. >> dr. schaffner, thank you very much. >>> secretary of state hillary clinton is in belgium this morning, discussing security issues, including the worsening situation in syria. margaret brennan is at the nato headquarters in brussels. >> reporter: hillary clinton just finished her last nato meeting as secretary of state. military alliance decided not to intervene in syria to stop the killing that has taken the lives of nearly 40,000 people. they are sending patriot missiles to turkey, to create a shield to protect against potential chemical weapons attack. >> we've made our views absolutely clear to the syrians, to the international community through various channels, public, private, direct, indirect that this is a situation that the entire international community is united on. >> reporter: secretary clinton said the missile shield will only be used for de